Sectional boiler.



E; MBOSLEY. SEGTIONAL BOILER. APPLIUATION FILED JUNE l5. 1908 mmm Aug. 3, 1909.

3 SHEETS-SHEET 1.

E. M. BosLpY. SECTIONAL BOILER. I APPLICATION FILED JUNE 15, 1908.

'Patented Aug. s, 1909.

BSHEETS-SHEET 2.

Inventor .Boem

V EliJah M bym@ mu/ams;

E. M. BOSLEY. SEGTIONAL BOLER. APPLICATION FILED JUNE 15, 1908.

93@ 1 G Patented Aug. 3, Y1 909 3 SHEETS-SHEET 3.

inventor:

Witneaaaa Ejah Moaiey ticularly to sectional boilers .has large heating area.

- superimposed sections.

' provide a down-draft sectional boiler ccm- .my invention is to provide a down-draft my invention will be hereinafter pointed,

means is provided. for vadmitting air abover 'the bed of fuel so as to create a draft do'vvn ELEJH M. BOSLEY, GF

y snorronar. nonna.

ne. eac, leo.

To all whom "it concern:

Be it linoivn that l, Emmen M. BosLn'Y, a citizen of the United States., residing at St. Louis, lillissouri, have invented a certain nenY and useful Improvement in Sectional Boilers, of which the following is a full, clear, and exact description, such as Will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, forming part of this specification, in which Figure l is a vertical longitudinal sectionalview of a boiler constructed `in accordance with my invention; Fig. 2 is a vertical transverse sectional View of said boiler; Fig. 3 is a top plan View partly in horizontal section of the boiler shown in `Figs. 1 and 2; and Fig. 4.- is a detail #vertical sectional View taken on approximately the line 4-4 of This invention relates to boilers, and par! of the type .used in steam or hot Water heating systems. One object of my invention is to rovide 'a comparatively small sectional boi er that Another object of my invention is to provide a down-draft sectional boiler composed ot a number of horizontally arranged or Another object' of my invention is to posed of a number of horizontally arranged sect-ions, one oi which is provided with an integral grate. And still another object of.

sectional boilerliaving-a magazine feed Other objects and desirable features lof out.

Briefly described, my improved boiler consists of a number of hrizontally disposed ,sections having hollow chambers through which the heating medium circu# lates, and liuesthrough Which the -hot gases of combustion travel. The grate on which the fuel rests iss so constructed that the heat` ing'medium can circulate through it, and

through the grate, the various sections of the boiler havin iferticall" disposed llues that lead from tne combusl on chamber to Specification of Letters atent.

replication ala .rune 15, 190s. serial No. 438,582.

Athe preferred form of Patented stug. 3, i905?.

the smoke-pipe so as to carry on' the prod-I ucts of combustion. rlhe hollow members that constitute the gratebars are preferably cast integralrwith the section Whlch carries said hollow members, and the sections which are arranged underneath what l will term the grate section, are also preferably pro vided With hollow members that are located in the path of the flame which travels downwardly from the grate, said hollow members being so constructed that they form a coil through which the heating medium circulates. The top section of the boiler is provided Wit-h a hopper or magazine which is adapted `to be filled With fuel that is supplied automatically to the fire and asthe draft passes downwardly through the grate and does not strike the magazine, the fuel in same will not coke.

Referring to the drawings which illustrate my invention, .A designates the base section of myimproved boiler, and Bdesignates a plurality of sections that arc arranged one above the other on said base Isection, the uppermost section B constituting the grate sect-ion. The sections B are `preferably of the same shape and configuration so that one pattern can be used in manufacturing all of said sections and the sections do not have to be arranged in a certain sequence. when the boiler is being erected. The base section A is approximately channel-shaped in cross section, as shown in Fig. 2, so as to produce an ash-pit, and is provided With a chamber l through which the heating medium can circulate. This base section is so formed that a hollow wall 2 is located at therear endthereof, as .shown in Fig. 2, and itsfron'twall is provided With aclean-out opening 3 that is covered by a door `li.

lhile Lprefcr to use a base section that is provided with chambers through which the heating mediumcirculates, I do not Wish it to be understood that my broad idea is limited to such a structure, for if`desired the base section can consist merely of a plate provided with a rim or vertical wall that forms a portion of the outside ofthe boiler.

Each of the sections B that are superimposed upon the base section A is provided with hollow front and rear Walls 5 and 5, respectively, and hollow side Walls 7 that communicate with said front and rear Walls,

bers is immaterial so far as my broad idea is/concerned. The hollow members 8 are spaced away from each other, as shown in Fig. 2, so that the flame from the fuel can pass down between them, as hereinafter described. Each of the sections B is also provided with'hollow walls 9 that extend parallel to the side walls 7 and cooperate therewith to produce vertically disposed side tlues 10, the walls 9 communicating with the hollow front and rear walls of the section, as shown in Fig. 3, so that the heating mediumwill circulate through them.

Preferably, the hollow members 8 are pitched slightly or arranged at an angle, as shown in Fig. 1, so as to .cause the heating medium to flow through them, and the vhollow members 8 of adjacent sections are inclined in oppositeI directions so that they will form a coil up through which the heating medium circulates.

The sections B rest firmly uponeach other and are provided with coperating laterally projecting lugs" l1 through which fastening devices.12 pass to secure the sectionstogether, the base section Land the top section ,hereinafter.described also being provided with similar lugs l1: As prmfiously sl ated, the upper section l5 constitutes what 1 term the grate section, for the hollow meinbers 8 of said upper section act as grate-bars A that support the bed of fuel. These hollow Wall ofthe section C is provided on its `lower A edge with a wide 'recess or cut-out portion grate bars are cast integral with the section B so that the cost of the boiler is materially reduced owing to the fact that it is not necessary to employ 'skilled workmen to fit the water gratein position or vconnectit to the sections Vof the boiler by means of nipples or other similar'devices which permit the water-in the sections to circulate through the grate. The section C that is mounted upon the grate section is of similar construction to the sections B except that it is not provided with hollowl members 8, and inl stead of being provided with hollow walls that extend parallel to its hollow sidewalls, it is provided with hollow. walls 9 that converge, as shown in Fig. 2, so as to partially form the top of the fuel chamber. 'l`he front that alines witha recessor eut-out portion .of the same width in the upper edge of the front wall of the grate section B so las to produce an opening 13 that is covered by adraft door 14. This door is opened to admit air to the fuel chamber and thus create a. draft down through the grate and up through the vertical side tues 1G.

The top section D of the boiler is hollow and is providedwith a vertically disposed hopper or magazine 15 that is adapted to be lilled with fuel so that the fuel will be supplied automatically to the fire. An auxiliary hopper 16 is arranged above the magazine 15 and said auxiliary hopper is pro'- vided with a door l''that closes the opening througlrwhich the fuel is introduced. lfv

desired, this door 17 can be used instead' of the door 14 to admit air to the fuel chamber, the air being drawn down through the coal in the hopper 15. The bttom wall of this top section D is so formed 'that two horizontally disposed flues 18 will be produced, said llues communicating with the vertical side ilues -10 and having their rear ends coni-v4 nmnicatmg with the smoke-stack 19 so as to lform a continuous passage for the products of combustion.

The base section, top section and intermediate sections con'ununieate with each other so thatthe heating medium can circulate through all of' the sections, and the means herein shown for, establishing communication between the various sections consists of slip nipples 20 that pass -through alining openings in the contacting top-and bottom walls of the sections, as shown in Fig. 4, said nipples being preferably located at the corners of the sections, as shown in Fig. 3.

I prefer to provide one wall of the boiler with openings through which an implement can be inserted to vclean out the vertical side tlues l0, and in the construction herein shown the hollow front walls of ea'ch of the sections B. are provided .with openings 21 that aline with the vertically disposed tlues 10, as shown in Figs. 2 and 3, said openings 21 being covered by movable caps 22. By removing the caps 22 a suitable implement can be inserted in the vertical-(lues 10' to clean same. l also prefer to provide the boiler with clean-out openings 23'through which an implement can be inserted to brush olf the cinders or ashes that collect on the hollow members 8 arranged underneath the.

grate. These openings 23 are formedjby alining recesses or cut-out portions in the front and rear walls of the sections B, and

'each opening is'covered by a movable door eso, 14o

and as the flame passes downwardly through the grate it does not come in contact with the l5 `very few sections.

fuel in the magazine and consequently said fuel will not-coke. f

By casting thehollow grate-bars integral with the section that carries theml =I liminate the expense of fittingthe grate-bars in position after the sections have beenerected. Another eat ladvantage of a boiler of this construction isthat it can be composed of Y Heretofor'e, sectional boilers were composedof a number of vertically arranged sections and in order to obtain a fire lgrate of the required area it was necessary to. use' four or five sections even though the heating system with Jwhich the boiler was used did not require a boiler of so great a capacity.y With my improved construction I am able to produce a boiler of just the required capacityA for lthe heating system with which it-is used by varying the number of sect-ions that are arranged 'between the base section and the grate section without reducing the grate area. Another advantage of my boiler is that the Hues are formed in each section instead -of being formed between the sections, namely, placing two sections together so that alining hollowed-outortions of the sections will form Hues. I' hile I have vherein illustrated and described a boiler in which the sections that are arranged Vbetween the grate section and the base section are provided with hol lo'w` members 8 through which the heating medium circulates, I vdo not wish it to be understood that my broad idea is limited to such a construction for, if desired,these intermediate sections need not be provided with hollow members S if a boiler of smallcapacity is desired. I prefer, however. to provide the intermediate sections with hollow members 8 for these members are located in the combustion chamber of the boiler and consequently are subjected to an intense.

heat.- The -boiler "can be produced at a low cost and can A be erected with very little trouble-and as it is small and has a-large heating area, itf'orms a very efiicient boiler for dwelling houses` Havingthus described my invention, what I claim as new and desire to secure by Let ters Patent is:

1. A down-shaft sectional boiler provided with vertically disposed viues that extend rom approximately the front to the rear wall of the boileryand a combustion chamber arranged underneath the fuel grate of the boiler and communicating with the lower ends of said lues; substantially as described.

.number of horizontally circulates, one ofv the 2. Adown-draft boiler composed of a base section that forms an ash pit, a top section having' horizontally disposed tiues that communicate with thel smoke pipe, and intermediate sections provided with vertical fines that have their lower ends open so as to establish communication between the ash pit and the horizontal fiues of the top section; substantially as described.

3. A down-draft boiler, consisting of a number of horizontally disposed superimposed sections having alining openings that form a vertical iiue, one of the sections adjacent the upper end of the boiler` being provided with a fuel grate consisting ,r of hollow bars formed integral with said section and having their ends communicating with chambers through which the heating me dium circulates, air above said grate to create a draft down through same and thus cause the products of combustion to enter the ,lower end of said vertical flue and pass upwardly through same; substantially as described.

. 4t. AdoWn-draft boiler, comprisinga nurnber of horizontally arranged cast metal sections provided with chambers through which the heating medium circulates, one of said sections belng provided with integral hollow bars that form a grate for the fuel, vertical fiues in said sections which lead from a combustion chamber under the grate, a plurality of rows of oppositely inclined hollow mem bers arranged in the combustion chamber under the grate and communicating with the chambers in said sections through which the heatingl medium circulates, and means for admitting air above the fuel to create a draft down through thegrale and thus cause the products of combustion to pass upwardly through said vertical fines; substantially described.

5. A down-draft boiler, consisting of a horizontally disposed base section that forms au ash pit, a number of superimposed sections mounted on the base section and provided with alining openings that form fines which establish communication between the ash pit and the smokepipe to carry oii the products of combustion. a fuel grate arranged adjacent the top of the boiler, and means for admitting air above said fuel grate so as to create a draft down through same and thus cause the products of combustion to pass upwardly through said vertical fines; substantially as described.

6. A dowlrdraft boiler composed of a posed sections having communicating chambers through which the heating medium sections adjacent the upper end of the boiler being provided with av grate on which the fuel rests, means for admittingair above said grate to create a and means for admitting disposed superimdraft down throuwh Same, and :1 top section provided with n chamber through. which the heating medn un circulates and also having an opening through which the fuel is introduced onto Suid grate; substantially as describedA In testimony whereof 1 hereunto aix'my V 

